/*
 * Copyright 2021 DataCanvas
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.calcite.sql.type;

import org.apache.calcite.rel.type.RelDataType;
import org.apache.calcite.rel.type.RelDataTypeFactory;

public class DingoSqlTypeUtil extends SqlTypeUtil {
    public static RelDataType getMaxPrecisionScaleDecimal(RelDataTypeFactory factory) {
        int maxPrecision = factory.getTypeSystem().getMaxNumericPrecision();
        // scale should not greater than precision.
        int scale = Math.min((maxPrecision / 2), 30);
        return factory.createSqlType(SqlTypeName.DECIMAL, maxPrecision, scale);
    }
}
